SAR stands for Specific Absorption Rate. It is a complex
measurement of how much radiation passes through tissue
during a specified time period. In other words, it measures
the level of absorption of EMR by the body. When biological
tissues absorb EMR it can lead to the distortion of cellular
function. Up until 1993 no one had ever observed that there
were any heating effects occurring at SAR levels below 40
watts per kilogram. Cell phones operate at a power of about
0.6 watts and yield a SAR value of less than 2 watts per
kilogram which appears to be a safe level. Again, this was
the rationale used when the government exempted cell phones
from any pre-market testing and any form of regulation. As
long as SARs were this low and no heating effect took place
it was assumed that no harm could be done to biological
tissue by a cell phone. We now know this to be an erroneous
assumption.

All cell phones today have a published SAR value. It varies
slightly from phone model to phone model. However, knowing
the SAR number of your phone is of minimal value since all
phones manufactured today must meet the FCC established
standard of 1.6 watts/kg or below. That said, it’s still a
good idea to purchase a cell phone with a SAR value as low
as possible to minimize the absorption of radiation when the
cell phone is near the head. But SAR only measures the
intensity of the electromagnetic field. Keep in mind that
SAR does not measure the pulsating or oscillatory action of
the wave. For example, the wave frequency or pulse could be
low enough to mimic the electrical activity of the brain
itself and thereby cause damage but the cell phone could
still have a low SAR value.

So knowing the SAR would be of little value in this case.
SARs may have a useful application for microwave ovens but
they simply are not adequate for cell phones, as the heating
effect doesn’t occur until SARs reach 20 to 25 watts per
kilogram. It is also important to understand that SARs in no
way address the mechanism of damage being caused by the
Information-Carrying Radio Wave. The SAR value for your
specific phone can be found by visiting the FCC website or
by visiting http://www.sarvalues.com.

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